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Finding the Fourth Proportional to 98,129.70, 147,194.55 and 88,288.20

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Solution

The fourth proportional to 98,129.70, 147,194.55 and 88,288.20 is: 132,432.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,129.70 : 147,194.55 = 88,288.20 : x
  2. Step 2: Convert to fraction form
    98,129.70/147,194.55 = 88,288.20/x
  3. Step 3: Cross multiply
    98,129.70x = 147,194.55 × 88,288.20
  4. Step 4: Simplify right side
    98,129.70x = 12,995,541,869.31
  5. Step 5: Solve for x
    x = 12,995,541,869.31/98,129.70
  6. Step 6: Final answer
    x = 132,432.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.